EP1707295A1 - Schutzgas zum WIG-Schweißen von Metallen - Google Patents
Schutzgas zum WIG-Schweißen von Metallen Download PDFInfo
- Publication number
- EP1707295A1 EP1707295A1 EP06111528A EP06111528A EP1707295A1 EP 1707295 A1 EP1707295 A1 EP 1707295A1 EP 06111528 A EP06111528 A EP 06111528A EP 06111528 A EP06111528 A EP 06111528A EP 1707295 A1 EP1707295 A1 EP 1707295A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- tig
- metals
- volume
- protective gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004021 metal welding Methods 0.000 title claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000001257 hydrogen Substances 0.000 claims abstract description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000001307 helium Substances 0.000 claims abstract description 6
- 229910052734 helium Inorganic materials 0.000 claims abstract description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052786 argon Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract 2
- 230000001681 protective effect Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
Definitions
- the invention relates to a protective gas for TIG welding of metals, in particular for welding high-alloy steels.
- TIG tungsten inert gas arc welding
- a TIG welding process is understood to mean any welding process using a non-consumable electrode.
- the arc burns freely between the electrode and the workpiece.
- the invention has for its object to provide a protective gas, with which an improvement in the weld quality in TIG - achieved welding and the required post-processing of the weld can be reduced.
- the hydrogen content of the protective gas according to the invention is between 1.5% by volume and 2% by volume.
- the hydrogen content of the protective gas improves the thermal conductivity and at the same time exerts a reducing effect on the material surface.
- a hydrogen content of 1.5% by volume these properties lead to particularly advantageous welding results.
- a hydrogen content of less than 1.5% by volume is in many cases detrimental to the welding result.
- the hydrogen content should not exceed a value of 2% by volume, since the hydrogen content of the protective gas also has a significant influence on the viscosity of the melt and a value above about 2% by volume leads to an unfavorably low viscosity of the melt in many cases ,
- the helium content of the welding gas according to the invention is between 2% by volume and 5% by volume.
- a helium content of more than 2% by volume improves the thermal conductivity significantly.
- the low helium content ensures good visibility of the arc.
- the addition of other components, such as nitrogen, is disadvantageous for most applications.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
Description
- Die Erfindung betrifft ein Schutzgas zum WIG-Schweißen von Metallen, insbesondere zum Schweißen von hochlegierten Stählen.
- In der industriellen Anwendung sind zahlreichen Schweißgase für das Schweißen unter Schutzgasen bekannt, wobei je nach der Zusammensetzung des zu schweißenden Werkstücks und der jeweiligen Schweißaufgabe unterschiedliche Schweißgase zum Einsatz kommen. Unter dem Wolfram - Inertgas - LichtbogenSchweißen (WIG) wird im Allgemeinen ein Schweißverfahren mit einer nichtabschmelzenden oder nichtabbrennenden Elektrode (Dauerelektrode) verstanden, die im Allgemeinen aus Wolfram besteht. Im Kontext der vorliegenden Erfindung wird unter einem WIG-Schweißverfahren jedes Schweißverfahren verstanden, bei denen eine nichtabschmelzende Elektrode zum Einsatz kommt. Üblicherweise brennt dabei der Lichtbogen frei zwischen der Elektrode und dem Werkstück.
- Es ist bekannt, dass das WIG-Schweißen von Metallen mit einer Wärmeleitfähigkeit unterhalb von Aluminium, insbesondere hochlegierte Stähle, mit Argon als Schutzgas erfolgt. Um die Schweißleistungen zu verbessern, wurden dem Argon häufig auch andere Gase, insbesondere 2 bis 7,5 % Wasserstoff beigemischt. Die Schweißergebnisse mit solchen Schutzgasen sind je nach Werkstoffzusammensetzung und Schweißzusatzwerkstoff sehr unterschiedlich.
- Aus der
PCT/EP98/06746 ist ein Dreistoffgemisch zum WIG-Schweißen bekannt, bestehend aus einer Argon mit Beimischungen aus 0,15 bis 1,5 Vol.-% Wasserstoff und 0,5 bis 9 Vol.-% Helium. Mit diesem Gemisch wurde die Lichtbogenstäbilität, die Schweißgeschwindigkeit, die Oxidation der Nahtoberfläche und des nahtnahen Bereiches, das Anfließverhalten und das Nahtaussehen wesentlich verbessert. Dennoch bedarf die Schweißnaht einer erheblichen Nachbearbeitung. Insbesondere ist der Beizaufwand erheblich und die Einbrandqualität verbesserungswürdig. - Der Erfindung liegt die Aufgabe zugrunde, eine Schutzgas zu schaffen, mit dem eine Verbesserung der Schweißnahtqualität beim WIG - Schweißen erreicht und die erforderliche Nachbearbeitung der Schweißnaht reduziert werden kann.
- Diese Aufgabe wird durch ein Schweißgas mit den Merkmalen des Anspruchs 1 gelöst.
- Der Wasserstoffanteil des erfindungsgemäßen Schutzgases liegt zwischen 1,5 Vol-% und 2 Vol-%. Der Wasserstoffgehalt des Schutzgases verbessert die thermische Leitfähigkeit und übt zugleich eine reduzierende Wirkung auf die Werkstoffoberfläche aus. Versuche haben gezeigt, dass ab einem Wasserstoffanteil von 1,5 Vol-% diese Eigenschaften zu besonders vorteilhaften Schweißergebnissen führen. Ein Wasserstoffanteil unter 1,5 Vol-% ist dagegen in vielen Fällen nachteilig für das Schweißergebnis. Andererseits sollte der Wasserstoffanteil einen Wert von 2 Vol-% nicht übersteigen, da der Wasserstoffanteil des Schutzgases auch einen wesentlichen Einfluss auf die Viskosität der Schmelze hat und ein Wert oberhalb von etwa 2 Vol-% zu einer in vielen Fällen ungünstig geringen Viskosität der Schmelze führt.
- Der Heliumanteil des erfindungsgemäßen Schweißgases liegt zwischen 2 Vol-% und 5 Vol-%. Ein Heliumanteil von mehr als 2 Vol-% verbessert die thermische Leitfähigkeit wesentlich. Zugleich gewährleistet der niedrige Heliumanteil eine gute Sichtbarkeit des Lichtbogens. Die Zugabe weiterer Komponenten, wie beispielsweise Stickstoff, erweist sich für die meisten Anwendungen als nachteilig.
- Mit dem erfindungsgemäßen Schutzgasgemisch werden sowohl beim manuellen als auch mechanisierten Schweißen wesentliche anwendungstechnische Vorteile erzielt. Das Fließverhalten wird verbessert, die Tendenz zu Nahtfehlern wird reduziert. Das Einbrandverhalten wird bei gleichem Strom deutlich verbessert und der Beizaufwand deutlich vermindert. Das Ergebnis beim Schweißen insbesondere von hochlegierten Stählen wird wesentlich verbessert.
Claims (3)
- Schutzgas zum WIG-Schweißen von Metallen, insbesondere zum Schweißen von hochlegierten Stählen mit einem Anteil von 1,5 bis 2 Vol.-% Wasserstoff, 2 bis 5 Vol.-% Helium und Rest Argon.
- Verfahren zum WIG-Schweißen mit einem Schutzgas nach Anspruch 1.
- Verwendung eines Gasgemisches nach Anspruch 1 als Schutzgas zum WIG-Schweißen von hochlegierten Stählen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL06111528T PL1707295T3 (pl) | 2005-03-31 | 2006-03-22 | Gaz ochronny do spawania metodą TIG |
| SI200632323T SI1707295T1 (sl) | 2005-03-31 | 2006-03-22 | Zaščitni plin za varjenje kovin po postopku TIG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005014615A DE102005014615B4 (de) | 2005-03-31 | 2005-03-31 | Schutzgas zum WIG-Schweißen und seine Verwendung zum manuellen WIG-Schweißen von hochlegierten Stählen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1707295A1 true EP1707295A1 (de) | 2006-10-04 |
| EP1707295B1 EP1707295B1 (de) | 2019-01-09 |
Family
ID=36603576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06111528.3A Active EP1707295B1 (de) | 2005-03-31 | 2006-03-22 | Schutzgas zum WIG-Schweißen von Metallen |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1707295B1 (de) |
| CN (1) | CN1853846A (de) |
| DE (1) | DE102005014615B4 (de) |
| ES (1) | ES2717837T3 (de) |
| HU (1) | HUE042357T2 (de) |
| LT (1) | LT1707295T (de) |
| PL (1) | PL1707295T3 (de) |
| SI (1) | SI1707295T1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3061560A1 (de) | 2015-02-26 | 2016-08-31 | Messer Group GmbH | Schutzgas zum wig-schweissen ferritischer stähle |
| EP3189931A1 (de) | 2016-01-09 | 2017-07-12 | Messer Group GmbH | Verfahren zum schweissen austenitischer werkstoffe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286480A (zh) * | 2013-06-05 | 2013-09-11 | 天津大学 | 一种用于大功率tig焊接的保护气 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5666382A (en) * | 1979-10-30 | 1981-06-04 | Daido Steel Co Ltd | Shielding gas for welding |
| JPS5829581A (ja) * | 1981-08-17 | 1983-02-21 | Teisan Kk | ３成分被包又は拘束混合ガス |
| WO1999022901A1 (de) | 1997-11-03 | 1999-05-14 | Messer Griesheim Gmbh | Schutzgas zum wig-schweissen |
| WO2002076670A1 (de) * | 2001-03-21 | 2002-10-03 | Linde Ag | Verwendung eines prozessgasgemisches und verfahren zum laserstrahlschweissen |
| EP1295669A1 (de) * | 2001-09-21 | 2003-03-26 | L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude | Verfahren zum Tig-Schweissen mit Zusatzdraht und verbesserter Schutzgasabschermung |
| DE10254743A1 (de) * | 2002-11-23 | 2004-06-09 | Messer Griesheim Gmbh | Schutzgas zum WIG- und Plasma-Schweißen von Werkstoffen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282144A (ja) * | 1999-04-02 | 2000-10-10 | Sumitomo Metal Ind Ltd | マルテンサイト系ステンレス溶接鋼管の製造方法 |
| FR2809647B1 (fr) * | 2000-05-31 | 2002-08-30 | Air Liquide | Procede de soudage hybride laser-arc avec melange gazeux approprie |
| DE10254742A1 (de) * | 2002-11-23 | 2004-06-09 | Messer Griesheim Gmbh | Schutzgas zum WIG- und Plasma-Schweißen von Werkstoffen |
-
2005
- 2005-03-31 DE DE102005014615A patent/DE102005014615B4/de not_active Revoked
-
2006
- 2006-03-03 CN CNA2006100841784A patent/CN1853846A/zh active Pending
- 2006-03-22 LT LTEP06111528.3T patent/LT1707295T/lt unknown
- 2006-03-22 ES ES06111528T patent/ES2717837T3/es active Active
- 2006-03-22 SI SI200632323T patent/SI1707295T1/sl unknown
- 2006-03-22 EP EP06111528.3A patent/EP1707295B1/de active Active
- 2006-03-22 PL PL06111528T patent/PL1707295T3/pl unknown
- 2006-03-22 HU HUE06111528A patent/HUE042357T2/hu unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5666382A (en) * | 1979-10-30 | 1981-06-04 | Daido Steel Co Ltd | Shielding gas for welding |
| JPS5829581A (ja) * | 1981-08-17 | 1983-02-21 | Teisan Kk | ３成分被包又は拘束混合ガス |
| WO1999022901A1 (de) | 1997-11-03 | 1999-05-14 | Messer Griesheim Gmbh | Schutzgas zum wig-schweissen |
| WO2002076670A1 (de) * | 2001-03-21 | 2002-10-03 | Linde Ag | Verwendung eines prozessgasgemisches und verfahren zum laserstrahlschweissen |
| EP1295669A1 (de) * | 2001-09-21 | 2003-03-26 | L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude | Verfahren zum Tig-Schweissen mit Zusatzdraht und verbesserter Schutzgasabschermung |
| DE10254743A1 (de) * | 2002-11-23 | 2004-06-09 | Messer Griesheim Gmbh | Schutzgas zum WIG- und Plasma-Schweißen von Werkstoffen |
Non-Patent Citations (3)
| Title |
|---|
| HUNT C ET AL: "HELIUM - A LIGHTWEIGHT GAS BUT A HEAVYWEIGHT PERFORMER", WELDING AND METAL FABRICATION, IPC LTD. HAYWARDS HEATH, GB, vol. 65, no. 6, June 1997 (1997-06-01), pages 10,12,14, XP000659973, ISSN: 0043-2245 * |
| PATENT ABSTRACTS OF JAPAN vol. 005, no. 131 (M - 084) 21 August 1981 (1981-08-21) * |
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 106 (M - 213) 10 May 1983 (1983-05-10) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3061560A1 (de) | 2015-02-26 | 2016-08-31 | Messer Group GmbH | Schutzgas zum wig-schweissen ferritischer stähle |
| DE102015001754A1 (de) | 2015-02-26 | 2016-09-01 | Messer Group Gmbh | Schutzgas zum WIG-Schweißen ferritischer Stähle |
| EP3189931A1 (de) | 2016-01-09 | 2017-07-12 | Messer Group GmbH | Verfahren zum schweissen austenitischer werkstoffe |
| DE102016000218A1 (de) | 2016-01-09 | 2017-07-13 | Messer Group Gmbh | Verfahren zum Schweißen austenitischer Werkstoffe |
Also Published As
| Publication number | Publication date |
|---|---|
| LT1707295T (lt) | 2019-04-10 |
| HUE042357T2 (hu) | 2019-06-28 |
| ES2717837T3 (es) | 2019-06-25 |
| EP1707295B1 (de) | 2019-01-09 |
| SI1707295T1 (sl) | 2019-04-30 |
| PL1707295T3 (pl) | 2019-06-28 |
| DE102005014615B4 (de) | 2008-12-04 |
| DE102005014615A1 (de) | 2006-10-05 |
| CN1853846A (zh) | 2006-11-01 |
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